Dilaton contributions to the cosmic gravitational wave background

1992/11/17 by M. Gasperini, Massimo Giovannini, M. Giovannini · 5 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Pulsars and Gravitational Waves Research #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.47.1519

published as Phys.Rev. D47 (1993) 1519-1528 · 26 pages, plain tex (to appear in Phys.Rev.D, 1 fig available from the authors upon req.)

arxiv created 1992/11/17 · openalex publication_date 1993/02/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider the cosmological amplification of a metric perturbation propagating in a higher-dimensional Brans-Dicke background, including a nontrivial dilaton evolution. We discuss the properties of the spectral energy density of the produced gravitons (as well as of the associated squeezing parameter), and we show that the present observational bounds on the graviton spectrum provide significant information on the dynamical evolution of the early Universe.

Citations

• Quantum Fields in Curved Space
• Investigations in relativistic cosmology

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